Migrate build target markers to keyboard.json - S (#23532)

keyboards/smithrune/iron165r2/f072/keyboard.json

@@ -1,4 +1,16 @@
 {
+    "build": {
+        "lto": false
+    },
+    "features": {
+        "backlight": true,
+        "bootmagic": true,
+        "command": true,
+        "extrakey": true,
+        "mousekey": false,
+        "nkro": true,
+        "rgblight": true
+    },
     "backlight": {
         "pin": "A6",
         "levels": 20,

keyboards/smithrune/iron165r2/f072/rules.mk

@@ -1,15 +0,0 @@
-# Build Options
-#   change yes to no to disable
-#
-BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
-MOUSEKEY_ENABLE = no        # Mouse keys
-EXTRAKEY_ENABLE = yes       # Audio control and System control
-CONSOLE_ENABLE = no         # Console for debug
-COMMAND_ENABLE = yes        # Commands for debug and configuration
-NKRO_ENABLE = yes           # USB Nkey Rollover
-RGBLIGHT_ENABLE = yes       # Enable keyboard RGB underglow
-AUDIO_ENABLE = no           # Audio output
-LTO_ENABLE = no
-ENCODER_ENABLE = no
-BACKLIGHT_ENABLE = yes
-

keyboards/smithrune/iron165r2/f411/keyboard.json

@@ -1,4 +1,16 @@
 {
+    "build": {
+        "lto": false
+    },
+    "features": {
+        "backlight": true,
+        "bootmagic": true,
+        "command": true,
+        "extrakey": true,
+        "mousekey": false,
+        "nkro": true,
+        "rgblight": true
+    },
     "eeprom": {
         "driver": "i2c"
     },

keyboards/smithrune/iron165r2/f411/rules.mk

@@ -1,14 +0,0 @@
-# Build Options
-#   change yes to no to disable
-#
-BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
-MOUSEKEY_ENABLE = no        # Mouse keys
-EXTRAKEY_ENABLE = yes       # Audio control and System control
-CONSOLE_ENABLE = no         # Console for debug
-COMMAND_ENABLE = yes        # Commands for debug and configuration
-NKRO_ENABLE = yes           # USB Nkey Rollover
-RGBLIGHT_ENABLE = yes       # Enable keyboard RGB underglow
-AUDIO_ENABLE = no           # Audio output
-LTO_ENABLE = no
-ENCODER_ENABLE = no
-BACKLIGHT_ENABLE = yes